Emil stein



(No Model.)

B. STEIN.

NEEDLE CLAMP FOR SEWING MAUHINES. No. 437,944. Patented Oct. 7, 1890.

ms PLTERS co., mqm-mna, wsumcwn. n. c.

:IUNITED STATES PATENT @Trrcn.

mun srnrv, on BERLIN, GER-MANY, assrcnon TO JULIUS M. 'ooHN, OF NEWYORK, N. Y.

NEEDLE-CLAMP FOR SEWING-MACHINES.

srncrrrcn'rron forming part of Letters Patent No. aszecenaeea October7,1890.

Application filed June 2, 1890 Serial No. 353,970. on model) Patented inFrance May 9, 1888, No. 190,517; in Germany November 1, 1888, No.47,586, and in Belgium November 6,1888, No. 83,855.

To all whom it may concern:

Be it known that I, EMIL STEIN, a subject of the King of Prussia,Germany, residin gin Berlin, Kingdom of Prussia, Germany, have inventedcertain new and useful Improvements in Sewing-Machines, (forwhichlhaveobtained a patent in France, No. 190,517, dated May 9, 1888; in Belgium,No. 83,855, dated November 6, 1888, and in Germany, No. 47,586, datedNovember 1, 1888 5) and I do hereby declare the following, when taken inconnection with accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said i 5 drawings constitute part of this specification,

and represent, in-

Figure 1, a reverse plan View of a needlehead carrying four needles andprovided with means for adjusting the same independently in pairs. Fig.2 is a view thereof in vertical section on the line ab and lookingtoward the adjacent end of the head. Fig. 3 is aview of the device invertical section taken on the irregular line 2 of Fig. 1. Fig. 4c is aview in horizontal section of a,needle-head carrying four needlesarranged in two pairs which are coupled together for operation, so thatthe needles are adjusted simultaneously; and Fig. 5 is a view in rearelevation of the device shown by Fig. 4, with the two outer pinionsindicated by dotted lines. Fig. 6 is a plan view of a needle-headcarrying two needles arranged to be relatively adjusted independently.

3 5 My invention relates to animprovement in multiple-needlesewing-machines, the object being to provide simple and convenient meansfor the adjustment of one or more needles transversely to the path inwhich the fabric 0 is fed to change their relative positions, and sovary the distances between the lines of stitching formed by them, as maybe desired.

lVith these ends in view my invention consists in certain details ofconstruction and 5 combinations of parts, as will be hereinafterdescribed, and pointed out in the claims.

As shown by Figs. 1 to 3 of the drawings, the needle-head consists of aflat irregular block at, having the needle-bar b, by which it isvertically reciprocated, secured to its upper face. Its under face isprovided with four parallel grooves ct, arranged to extend transverselyacross the path in which the fabric is fed. Each of the grooves receivesa needleslide 0, having at its inner end a vertical perforation toreceive a needle f, and each is traversed bya longitudinal threadedopening receiving a screw '11., impinging at its inner end upon theneedle and holding the same in place, and projecting at its outer endfrom the outer end of the slide, so as to be readily reached foroperation. All of the slides are held in the slots before mentioned bymeans of a horizontal plate d, conforming in shape to the shape of thehead, and secured against the lower face thereof by means of screws cl?d. The said plate supports but does not/itself bind the slides which arecoupled together for simultaneous adjustment in pairs by means of twothree-armed couplers g, fulcrumed to thelower 7o face of the headbetween the respectivepairs of slides by means of screws g g, which passthrough the plate d aforesaid. The two inner arms of each coupler extendin opposite directions, and have their outer ends slotted 5 to embracepins 0, projecting downwardly from the slides. The outer arm 9 of eachcoupler is bent upwardly to stand in front of the forward edge of thehead, and carries a set-screw g which is adjusted to gage the limit towhich the coupler may be moved in either direction, the coupler beingarrested in movement by the engagement of the inner end of the screwwith the forward edge of the head. It will be seen that by moving thearm g of either coupler in the direction of the arrows 00 on Fig. 1 ofthe drawings the slides will be moved away from each other and theneedles separated, while by moving the arm in the direction of thearrows y the slides will go be moved toward each other and the distancebetween the needles reduced. It will thus be seen that under theconstruction described the needles are adjusted in pairs and that veryreadily. After the needles have 5 been adjusted the slides are securedin place by means of screws h, mounted in the head and impinging againstthem.

In the construction shown by Figs. 4c and 5 of the drawings the slidesare coupled together I oo in pairs, and then the two pairs coupled orconnected by gearing, so that all of the needles will be movedsimultaneously. To this end each slide of each pair of slides hasrigidly secured to it an arm 0 the arms of the same pair receiving attheir inner ends an independent right and left hand horizontalscrew-shaft '11, journaled below the head. The forward ends of theseshafts are provided, respectively, with pinions i z", meshing into apinion is, formed upon the hub of a hand wheel also projecting from theforward edge of the head, to which it is journaled. It will be readilyunderstood that through the said hand-wheel and pinions the shafts maybe rotated so as to cause the needles to approach toward or separatefrom each other. 'When the needles are properly adjusted, the slides aresecured in place by set-screws h impinging against them and mounted inthe ends-of the head. The pinions z" 2" may correspond to each other insize, in which case all of. the needles will be given equal movement, orthey may be of difierent sizes, as herein. shown, in which the samemovement will adjust the needles of one pair more than those of theother.

Asa means of bringing the two pairs of needles into the right relations,the larger of the two pinions 2" is loosely mounted on itsshaft, andcoupled therewith by means of an arm m, rigidly attached thereto, andprovided at its outer end with a segmental slot receiving a screw m,entering the pinion and clamping the arm thereto, so that by removingthe screw the pinion may be turned without moving its shaft. Then afterthe two pairs of needles have been brought into their right relationsthe screw is restored, to again connect the shaft and pinion. A fineadjustmentmay be eifected by shifting the screw within the limits of thesegmental slot.

As shown by Fig. 6 of thedrawings, the needle-head A has two grooves A,extending transversely to the path in which the fabric is fed, formed inits lower face. These grooves respectively receive two needle-slides B,carrying a needle B, and held in place in the grooves by a plate 0,secured to the lower face of the head. Set-screws D, mounted in the saidhead, are arranged to respectively iin-- pingeupon the slides to lockthe same in any position into which they may be moved. 'Each slide isprovided with a screw B for holding its needle in place.

I have thus shown that under my invention the needles may be adjustedindependently or simultaneously in pairs or in larger groups,

and I would therefore have it understood that 7 I do not limit myself tothe exact construction shown and described, but hold myself at libertyto make such changes and alterations as fairly fall within the spiritand scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In amultiple-needle sewing-machine, the combination of a head havingindependent parallel grooves formed in its under face to extendtransversely to the line on which the fabric is fed, needle-slideslocated in the said grooves and adjustable therein, and means foradjusting the-m and securing them in place, substantially as described.

2. In a multiple-needle sewing-machine, the combination of a head havingindependent parallel grooves formed in its under. face to;

extend transversely to the line on which the fabric is fed,needle-slides located in the saidgrooves, and means for coupling twoormoreslides together for simultaneous adjustment, substantially asdescribed.

3. In a multiple-needle sewing-machine, the combination, with a head, offour needle-slides mounted therein and arranged in two pairs,

anindependent coupler for the slidesof each pair, and means foroperating the two couplers together, whereby the four slides and needlesare adjusted in unison, substantially as described.

4. In a multiple-needle sewing-machine,-

thecombination of a head having parallel grooves formed in its underface to extend transversely to the line in which the fabric is fed,needle-slides located in the said grooves,

a plate secured against the lower face ofthe head for holding the slidesin place, a coupler for each pair of slides, and means for securing theslides from movement after they have, been set, substantially asdescribed.

53111 a multiple-needle sewing-machine, the combination of a head havingindependent parallel grooves formed in its under face to extendtransversely to the line on which the fabric is fed, needle-slideslocated in the said grooves, right and left hand screws for coupling theslides together in pairs,-andpinionsconnecting the screws together forsimultaneons operation, substantially as described. 5

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ElWIIL STEIN. 1

Witnesses P. DEMHARTER,

GEO. H. MURPHY.

